exports.css=function (node,type,val){
	if(typeof node ==="object" && typeof node["transform"] ==="undefined" ){
		node["transform"]={};
	}
	
	if(arguments.length>=3){
		//设置
		var text ="";
		node["transform"][type] = val;
		
		for(var item in node["transform"]){
			if(node["transform"].hasOwnProperty(item)){
				switch (item){
					case "translateX":
					case "translateY":
					case "translateZ":
						text +=  item+"("+node["transform"][item]+"px)";
						break;
					case "scale":
						text +=  item+"("+node["transform"][item]+")";
						break;
					case "rotate":
						text +=  item+"("+node["transform"][item]+"deg)";
						break;
				}
			}
		}
		node.style.transform = node.style.webkitTransform = text;
	}else if(arguments.length==2){
		//读取
		val =node["transform"][type];
		if(typeof val === "undefined"){
			switch (type){
				case "translateX":
				case "translateY":
				case "rotate":
					val =0;
					break;
				case "scale":
					val =1;
					break;
			}
		}
		return val;
	}
}
